Tools & Wizards About Us
douban.fm screenshot

Report Summary

  • 42

    Performance

    Renders faster than
    61% of other websites

  • 76

    Accessibility

    Visual factors better than
    that of 42% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 92

    SEO

    Google-friendlier than
    74% of websites

douban.fm

温馨提示

Page Load Speed

12.5 sec in total

First Response

810 ms

Resources Loaded

11.5 sec

Page Rendered

153 ms

douban.fm screenshot

About Website

Welcome to douban.fm homepage info - get ready to check Douban best content for United States right away, or after learning these important things about douban.fm

腾讯云域名注册, 腾讯云旗下品牌。腾讯云域名注册是中国领先的域名注册服务提供商, 并提供云主机、网站建设等网络服务。

Visit douban.fm

Key Findings

We analyzed Douban.fm page load time and found that the first response time was 810 ms and then it took 11.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.

Performance Metrics

douban.fm performance score

42

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.0 s

24/100

10%

LCP (Largest Contentful Paint)

Value6.1 s

12/100

25%

SI (Speed Index)

Value8.7 s

16/100

10%

TBT (Total Blocking Time)

Value660 ms

45/100

30%

CLS (Cumulative Layout Shift)

Value0.047

99/100

15%

TTI (Time to Interactive)

Value6.1 s

63/100

10%

Network Requests Diagram

account

810 ms

account

1579 ms

douban.fm

1064 ms

core.css

1250 ms

fm_home.css

1256 ms

Our browser made a total of 71 requests to load all elements on the main page. We found that 1% of them (1 request) were addressed to the original Douban.fm, 92% (65 requests) were made to Img6.douban.com and 3% (2 requests) were made to Douban.com. The less responsive or slowest element that took the longest time to load (3.8 sec) relates to the external source S.doubanio.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.4 MB (54%)

Content Size

2.7 MB

After Optimization

1.2 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Douban.fm main page is 2.7 MB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 45% of websites need less resources to load. Javascripts take 1.1 MB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 108.2 kB

  • Original 137.6 kB
  • After minification 123.5 kB
  • After compression 29.4 kB

HTML content can be minified and compressed by a website’s server. The most efficient way is to compress content using GZIP which reduces data amount travelling through the network between server and browser. HTML code on this page is well minified. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 108.2 kB or 79% of the original size.

Image Optimization

-12%

Potential reduce by 99.7 kB

  • Original 840.9 kB
  • After minification 741.3 kB

Image size optimization can help to speed up a website loading time. The chart above shows the difference between the size before and after optimization. Obviously, Douban needs image optimization as it can save up to 99.7 kB or 12% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-68%

Potential reduce by 767.6 kB

  • Original 1.1 MB
  • After minification 1.1 MB
  • After compression 357.4 kB

It’s better to minify JavaScript in order to improve website performance. The diagram shows the current total size of all JavaScript files against the prospective JavaScript size after its minification and compression. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 767.6 kB or 68% of the original size.

CSS Optimization

-83%

Potential reduce by 474.5 kB

  • Original 572.8 kB
  • After minification 507.3 kB
  • After compression 98.3 kB

CSS files minification is very important to reduce a web page rendering time. The faster CSS files can load, the earlier a page can be rendered. Douban.fm needs all CSS files to be minified and compressed as it can save up to 474.5 kB or 83% of the original size.

Requests Breakdown

Number of requests can be reduced by 27 (40%)

Requests Now

68

After Optimization

41

  • Images
  • JavaScript
  • CSS

The browser has sent 68 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Douban. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 25 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

account

account

810 ms

account

account

1579 ms

douban.fm

douban.fm

1064 ms

core.css

core.css

1250 ms

fm_home.css

fm_home.css

1256 ms

_init_.js

_init_.js

967 ms

piwik.js

piwik.js

3818 ms

analytics.js

analytics.js

22 ms

cutline.png

cutline.png

17 ms

pro_icon.gif

pro_icon.gif

17 ms

31746.jpg

31746.jpg

17 ms

31360.jpg

31360.jpg

820 ms

31239.jpg

31239.jpg

46 ms

31387.jpg

31387.jpg

18 ms

31974.jpg

31974.jpg

2198 ms

1077113.jpg

1077113.jpg

45 ms

fm_logoV1.png

fm_logoV1.png

33 ms

collect

collect

27 ms

fm_rec_tip_bg.png

fm_rec_tip_bg.png

18 ms

app_logo.png

app_logo.png

26 ms

fm-front-icon-homepage.png

fm-front-icon-homepage.png

26 ms

icon-phone.png

icon-phone.png

31 ms

search_btn.png

search_btn.png

30 ms

playarrow.png

playarrow.png

29 ms

sidebar_icon.png

sidebar_icon.png

14 ms

jquery.min.js

jquery.min.js

5 ms

dialog.css

dialog.css

5 ms

swfobject.js

swfobject.js

5 ms

fm_bgad.js

fm_bgad.js

10 ms

fm_bannerad.js

fm_bannerad.js

10 ms

post_withck.js

post_withck.js

10 ms

index_helpers.js

index_helpers.js

11 ms

search_sugg.js

search_sugg.js

11 ms

jquery.template.js

jquery.template.js

17 ms

jquery-ui-effects.min.js

jquery-ui-effects.min.js

19 ms

store.min.js

store.min.js

18 ms

dialog.js

dialog.js

17 ms

fm_rotate_ad.js

fm_rotate_ad.js

31 ms

init_channel_list.js

init_channel_list.js

11 ms

fm_player.js

fm_player.js

4 ms

jquery.mousewheel.js

jquery.mousewheel.js

24 ms

fm_jdrag.js

fm_jdrag.js

11 ms

report_dialog.css

report_dialog.css

8 ms

init_login_register.js

init_login_register.js

10 ms

qrcode.min.js

qrcode.min.js

10 ms

reg_guide.js

reg_guide.js

16 ms

report_dialog.js

report_dialog.js

9 ms

fm_share.js

fm_share.js

30 ms

scrollbarbottom.gif

scrollbarbottom.gif

17 ms

scrollbartop.gif

scrollbartop.gif

16 ms

scrollbarbg.gif

scrollbarbg.gif

18 ms

26383.jpg

26383.jpg

15 ms

26384.jpg

26384.jpg

18 ms

26386.jpg

26386.jpg

18 ms

27132.jpg

27132.jpg

20 ms

26388.jpg

26388.jpg

24 ms

26391.jpg

26391.jpg

21 ms

26379.jpg

26379.jpg

22 ms

27675.jpg

27675.jpg

24 ms

20653.jpg

20653.jpg

25 ms

26392.jpg

26392.jpg

25 ms

26375.jpg

26375.jpg

26 ms

26376.jpg

26376.jpg

27 ms

26382.jpg

26382.jpg

29 ms

26390.jpg

26390.jpg

30 ms

26395.jpg

26395.jpg

51 ms

26387.jpg

26387.jpg

31 ms

1085613.jpg

1085613.jpg

31 ms

1077113.jpg

1077113.jpg

57 ms

send_song_to_phone.js

send_song_to_phone.js

47 ms

covermask.png

covermask.png

46 ms

Accessibility Review

douban.fm accessibility score

76

Accessibility Issues

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

Background and foreground colors do not have a sufficient contrast ratio.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

douban.fm best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

douban.fm SEO score

92

Search Engine Optimization Advices

Mobile Friendly

Make sure your pages are mobile friendly so users don’t have to pinch or zoom in order to read the content pages. [Learn more](https://developers.google.com/search/mobile-sites/).

Impact

Issue

High

Document uses legible font sizes

Language and Encoding

  • Language Detected

    ZH

  • Language Claimed

    ZH

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Douban.fm can be misinterpreted by Google and other search engines. Our service has detected that Chinese is used on the page, and it matches the claimed language. Our system also found out that Douban.fm main page’s claimed encoding is utf-8. Use of this encoding format is the best practice as the main page visitors from all over the world won’t have any issues with symbol transcription.

Social Sharing Optimization

douban.fm

Open Graph description is not detected on the main page of Douban. Lack of Open Graph description can be counter-productive for their social media presence, as such a description allows converting a website homepage (or other pages) into good-looking, rich and well-structured posts, when it is being shared on Facebook and other social media. For example, adding the following code snippet into HTML <head> tag will help to represent this web page correctly in social networks: